20W 638nm Fiber Coupled Diode Laser
Features:
- CW working mode ensures stable laser operation
- ±10nm wavelength tolerance, 105um fiber core
- Combined with a 0.22NA at a 1m fiber length
Applications:
- Applied to 3D scanning, contour mapping, high-precision positioning and alignment.High-power red light ensures stable detection in complex industrial environments.
- For precision marking, engraving and cutting of plastics, rubber and organic materials.Red wavelength yields clean edges, small heat-affected zone and high processing quality.
- Excites red-region fluorescent dyes for flow cytometry, confocal microscopy and bioanalysis.High power boosts imaging speed and signal-to-noise ratio.

This high-quality laser system boasts a vibrant red-orange light emission at a precise wavelength of 638nm, ensuring outstanding performance in a range of applications. The laser's fiber coupling technology guarantees seamless integration with optical fibers, resulting in optimal light transmission and efficiency. By coupling the laser output into a fiber, the beam quality remains intact, enabling precise control and targeted delivery of laser light to the desired destination. Equipped with an SMA905 fiber connector, this laser system offers convenient connectivity options. Alternative fiber connectors are also available to suit specific requirements.
Data Sheet
Item No: FC638DZ20
| Optical | |
| Center Wavelength | 638nm |
| Wavelength Tolerance | ±10nm |
| Output Power | 20W |
| Spectrum Width FWHM | 6nm |
| Electrical | |
| Fiber Core | 200um |
| Fiber Length | 1M/0.9mm |
| Fiber Numerical Aperture | 0.22NA |
| Fiber Connector | SMA905 |
| Electrical | |
| Operating Current Lop | 2A |
| Threshold Current Lth | 1A |
| Operating Voltage Vop | 45V |
| Thermistor | |
| Test Temperature | 25℃ |
| Wavelength Temperature Coefficient | 0.35nm/℃ |
Drawing:

With precise wavelength control, compact design, and stable power output, our 638nm laser is ideal for OEM integration or laboratory use. We also offer custom configurations to meet your specific technical needs.
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